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POHow to keep workspace variable values in memory?
 

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  1. POHow to keep workspace variable values in memory?
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    <p>I have a workspace with a set of variables (e.g. <code>var1</code>, <code>var2</code>, <code>var3</code>, <code>var4</code>, <code>var5</code>, <code>var6</code> and <code>var7</code>). There is a .m function (using <code>assignin('base',...)</code> containing the defaults values for <code>var1</code> to <code>var7</code>. The user will open Matlab and run this function in order to have the variable and their default values added to the workspace. The user might after that change the values of some variables or even delete some variables. </p> <p>Now, if the user has changed variable values and that he run the function again, i don't want the default value to overwrite the new value entered by the user.</p> <p>Here what i have so far :</p> <pre><code>S = evalin('base','whos'); listWorkspaceVar = {S.name}; compareCellArrayList = ismember(listWorkspaceVar, listParam); % logical vector, listParam is the list of variables in the function assigning the default values, so here listParam would be = {'var1' 'var2' 'var3' 'var4' 'var5' 'var6' 'var7'}) if any(compareCellArrayList) % check if there is at least one declared variable in the base workspace tempWorkspaceVarVal = cell(sum(compareCellArrayList),2); % Pre-allocating, 1 column for the variable name and 1 column for the variable value jj = 1; for ii = 1:size(S,1) if compareCellArrayList(1, ii) tempWorkspaceVarVal(jj,:) = {listWorkspaceVar{1, ii}, ... evalin('base',listWorkspaceVar{1, ii})}; jj = jj + 1; end end theDefaultValueFunction() % The function that assignin the default values cellfun(@(x,y) assignin('base', x, y), ... tempWorkspaceVarVal(:,1), tempWorkspaceVarVal(:,2)) % Overwrite with the temp values in order to keep the new entered values end </code></pre> <p>If I don't want to change the function assignin the default values, is my method the best one to keep the new modified variable values? </p>
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    1. COYou are over-constraining your question, which amounts to something like this: "I'm currently painting my house using a hammer, which I'd prefer to keep using. To get enough paint to stick to the hammer, I wrapped it in duct tape. Is this the best method?" Your solution is, frankly, unreadable; not due to the code, but due to the design. If it works for you, keep using it. Otherwise, clarify what you mean by "best", and consider asking a broader question.
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    2. CO@Peter Well what if there is nothing available other than a hammer and duct tape for painting my house? There are reasons behind the design, that I didn't explain here to keep the question simpler. The function declaring default variable is actually ran by a popup field in a simulink mask. It is a function because the popup send the option selected as input. Does it help you?
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    3. COOK, then if the code works, what is your question actually? Is your code too slow? Too large? Doesn't work properly? If it doesn't work, how does it fail?
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